Product manual

Barracuda 2LP Product Manual, Rev. D 67
11.5 Synchronous data transfer
The data transfer period to be used by the drive and the initiator is
established by an exchange of messages during the Message Phase of
operation. See the section on message protocol in the SCSI-2 Interface
Product Manual.
11.5.1 Synchronous data transfer periods supported
Table 12 lists the synchronous data transfer periods supported by the
drives.
Table 12. Synchronous data transfer periods
M Transfer period Transfer rate
(decimal) (M times 4 nanoseconds) (mega transfers/second)
25 100 10.0
31 125 8.0
37 150 6.66
50 200 5.0
62 250 4.0
75 300 3.33
87 350 2.86
100 400 2.5
11.5.2 REQ/ACK offset
The maximum REQ/ACK offset supported by Barracuda 2LP drives is
15 (0Fh).